Montague Aldous was a Dominion Topographical Surveyor from Charlottetown, Prince Edward Island. He was a participant in foundation surveys of the Northwest Territories. He was associated with A.L. Russell in 1877 in a survey west to the third meridian. In 1878 he subdivided Prince Albert, Saskatchewan. Taken on Special Survey in 1879, he surveyed the fourth meridian to a point north of Lloydminster, Alberta/Saskatchewan, then ran in the 14th base line west to Stony Plain where it intersected the 5th meridian. His assistant, Charles Alexander Magrath, was later the first mayor of Lethbridge, Northwest Territories. In 1880 Aldous surveyed the fifth meridian south to Waterton Lakes. He spent the rest of the summer in southern Alberta's Porcupine Hills, then being taken up for ranching.